Alert archive / Missouri / Flash Flood Warnings in 1993

Flash Flood Warning 67, NWS St. Louis, MO

September 23, 1993Jefferson County, Missouri

NWS St. Louis, MO issued this flash flood warning at Sep 23, 1993, 3:14 AM CDT for Jefferson County, Missouri. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Sep 23, 1993, 3:14 AM CDT (08:14 UTC)
Expired: Sep 23, 1993, 7:15 AM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

County Jefferson County, MO

The radar

The St Louis radar (KLSX), 50 km from the middle of the area, began a volume at 08:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 8.2 hours before the alert went out and 209 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 60 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1576 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 325 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 230817
FFWSTL
MOC099-231215-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
314 AM CDT THU SEP 23 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  715 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...JEFFERSON COUNTY
 
AT 310 AM...NWS DOPPLER RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN
EXTENDING FROM GASCONADE COUNTY ACROSS FRANKLIN COUNTY INTO JEFFERSON
COUNTY. THESE STORMS WERE MOVING TO THE EAST SOUTHEAST AT 30 MPH AND
WILL MOVE OVER AREAS WHICH HAVE ALREADY SEEN HEAVY RAINS DURING THE
NIGHT.
 
RADAR ESTIMATES INDICATE THESE STORMS HAVE BEEN PRODUCING 1 TO 2 INCHES
OF RAIN PER HOUR.  AS THESE STORMS MOVE REPEATEDELY OVER JEFFERSON
COUNTY THEY WILL LIKELY PRODUCE HEAVY RAINFALL AND ADDITIONAL FLASH
FLOODING.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
GLASS

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Sep 22, 9:42 PM CDT, 5 hours 32 minutes before

MOZ013-015-230345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
940 PM CDT WED SEP 22 1993

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN MISSOURI HAS BEEN
CANCELLED...

AT 935 PM...SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE CENTRAL THIRD
OF MISSOURI.  THE THUNDERSTORMS WILL PRODUCE HEAVY RAIN...DANGEROUS
LIGHTNING AND STRONG GUSTY WINDS.  THE THUNDERSTORMS ARE NOT EXPECTED TO
REACH SEVERE LIMITS.

A FLASH FLOOD WATCH\ REMAINS IN EFFECT FOR MUCH OF CENTRAL MISSOURI FOR
THE REST OF THE NIGHT.  STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL
RADIO OR TV STATION FOR THE LATEST INFORMATION ABOUT THESE STORMS.

MORSE

Special weather statement, Sep 22, 9:53 PM CDT, 5 hours 21 minutes before

MOZ013-015-230345-

SPECIAL WEATHER STATEMENT...CORRECTIOM
NATIONAL WEATHER SERVICE ST LOUIS MO
955 PM CDT WED SEP 22 1993

...THE SEVERE THUNDERSTORM WATCH FOR WESTERN MISSOURI HAS BEEN
CANCELLED...

AT 935 PM...SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE CENTRAL THIRD
OF MISSOURI.  THE THUNDERSTORMS WILL PRODUCE HEAVY RAIN...DANGEROUS
LIGHTNING AND STRONG GUSTY WINDS.  THE THUNDERSTORMS ARE NOT EXPECTED TO
REACH SEVERE LIMITS.

A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MUCH OF CENTRAL MISSOURI FOR
THE REST OF THE NIGHT.  STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL
RADIO OR TV STATION FOR THE LATEST INFORMATION ABOUT THESE STORMS.

MORSE

Special weather statement, Sep 22, 9:55 PM CDT, 5 hours 19 minutes before

MOZ013-015-230345-

SPECIAL WEATHER STATEMENT...CORRECTIOM
NATIONAL WEATHER SERVICE ST LOUIS MO
955 PM CDT WED SEP 22 1993

...THE SEVERE THUNDERSTORM WATCH FOR WESTERN MISSOURI HAS BEEN
CANCELLED...

AT 935 PM...SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE CENTRAL THIRD
OF MISSOURI.  THE THUNDERSTORMS WILL PRODUCE HEAVY RAIN...DANGEROUS
LIGHTNING AND STRONG GUSTY WINDS.  THE THUNDERSTORMS ARE NOT EXPECTED TO
REACH SEVERE LIMITS.

A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MUCH OF CENTRAL MISSOURI FOR
THE REST OF THE NIGHT.  STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL
RADIO OR TV STATION FOR THE LATEST INFORMATION ABOUT THESE STORMS.

MORSE

Local storm report, Sep 22, 11:30 PM CDT, 3 hours 44 minutes before

LOCAL STORM REPORT..COR..
NATIONAL WEATHER SERVICE ST LOUIS MO
1130 PM CDT WED SEP 22 1993

TIME(CDT)         COUNTY        REPORT

630 PM            WARREN        TREES AND POWER LINES DOWN AT
                  MISSOURI      NEW TRUXTON. REPORTED BY AMATEUR
                                RADIO OPERATOR.

PRZYBYLINSKI

Local storm report, Sep 22, 11:32 PM CDT, 3 hours 42 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1130 PM CDT SUN SEP 19 1993

TIME(CDT)         COUNTY        REPORT

630 PM            WARREN        TREES AND POWER LINES DOWN AT
                  MISSOURI      NEW TRUXTON. REPORTED BY AMATEUR
                                RADIO OPERATOR.

PRZYBYLINSKI

Local storm report, Sep 22, 11:32 PM CDT, 3 hours 42 minutes before

LOCAL STORM REPORT..COR..
NATIONAL WEATHER SERVICE ST LOUIS MO
1130 PM CDT WED SEP 22 1993

TIME(CDT)         COUNTY        REPORT

630 PM            WARREN        TREES AND POWER LINES DOWN AT
                  MISSOURI      NEW TRUXTON. REPORTED BY AMATEUR
                                RADIO OPERATOR.

PRZYBYLINSKI

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 22, 8:35 PM CDT	Flash Flood Warning	LSX	Saint Charles, Saint Louis, Warren	3 hr
Sep 22, 8:35 PM CDT	Flash Flood Warning	LSX	City of Saint Louis	3 hr
Sep 22, 9:25 PM CDT	Flash Flood Warning	LSX	Franklin	3 hr
Sep 23, 1:19 AM CDT	Flash Flood Warning	LSX	Crawford, Saint Francois, Washington	4 hr
Sep 23, 2:34 AM CDT	Flash Flood Warning	LSX	Franklin	4 hr
Sep 23, 7:41 AM CDT	Flash Flood Warning	LSX	Saint Louis, City of Saint Louis	3 hr
Sep 23, 7:41 AM CDT	Flash Flood Warning	LSX	Franklin, Jefferson	3 hr
Sep 23, 7:41 AM CDT	Flash Flood Warning	LSX	Saint Charles	3 hr
Sep 23, 8:41 AM CDT	Flash Flood Warning	LSX	Perry, Sainte Genevieve, Saint Francois, Washington	3 hr
Sep 23, 8:55 AM CDT	Flash Flood Warning	LSX	Warren	110 min
Sep 23, 10:24 AM CDT	Flash Flood Warning	LSX	Crawford	4 hr

Nearby

Flash Flood Warnings in Missouri, 1993 Every flash flood warning in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.